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Zinc Spray Gun for Tube Mill | Weld Seam Repair from China Suppliers & Factory for Corrosion Protection
Zinc Spray Gun for Tube Mill | Galvanizing Repair & Weld Seam Protection
In modern tube mill production, corrosion protection is not something you can ignore—especially at the weld seam. This is where a zinc spray gun becomes extremely practical.
Instead of relying only on traditional galvanizing, many factories today use zinc spraying as a fast and flexible way to repair damaged coating areas. It’s widely applied in weld seam protection, galvanized surface repair, and anti-rust treatment for steel pipes.
Compared with hot dip galvanizing, zinc spraying doesn’t require a full production process or immersion in molten zinc. It’s quicker, easier to control, and much more suitable for localized treatment or post-weld repair.
What is a Zinc Spray Gun?
A zinc spray gun is a thermal spraying device that melts zinc wire or powder and projects it onto a steel surface, forming a protective coating. In simple terms, it allows you to “rebuild” the zinc layer exactly where it is needed.
Once applied, the zinc coating acts as both a barrier and a sacrificial layer, meaning it protects steel even if the surface is slightly damaged. 👉 That’s why it works so well in real factory conditions.
Typical Applications:
- ERW tube mills
- Steel pipe production lines
- Weld seam protection
- Galvanized pipe repair
FAB of Our Products
Key Features
- High deposition efficiency (less zinc waste)
- Stable and uniform spray pattern
- Adjustable coating thickness
- Compatible with zinc wire or powder
- Designed for continuous industrial use
Technical Advantages
- Lower zinc consumption
- Improved weld seam consistency
- Extended pipe service life
- Reduced rejection rate
- Easy integration into existing lines
Applications
- Steel pipe and tube production
- Seam anti-corrosion
- Repair of damaged galvanized surfaces
- Steel protection
- Marine and outdoor equipment
Why Zinc Spray Gun is Important in Tube Mill
During high-frequency welding, the original galvanized layer at the seam is usually burned off. If nothing is done:
- Rust can appear very quickly
- Pipe durability drops
- Export quality may fail inspection
Zinc spraying solves this problem directly. It restores the protective layer right after welding, helping the pipe maintain corrosion resistance without slowing down production. From a practical standpoint, it’s not just protection—it’s quality control insurance.
Key Attributes
| No. | Attribute | Details |
|---|---|---|
| 1 | MOQ | 1 Set |
| 2 | Payment | T/T, 50% deposit, 50% before delivery |
| 3 | Warranty | 12 months |
| 4 | OEM | Available |
| 5 | Package | Box |
Model Specifications
| Model NO. | Power (KW) | Gun Amount | Wire Diameter (mm) | Gas Consumption (m³/min) | Application |
|---|---|---|---|---|---|
| SX-400 | 15 | 1 | 1.6-2 | 2.3 | Zinc, aluminum, partial repairing process |
| SX-500 | 18 | 1 | 1.6-2 | 3 | Hardware repairing, small project construction |
| SX-600 | 21.6 | 1 | 1.6-2 | 3 | Spray hard alloy wire, boiler construction |
| SX-800 | 28.8 | 2 | 2 | 4.6 | Spray zinc and aluminum in big area, works automatically |
| SX-1000 | 36 | 2 | 2 | 4.6 | Project construction, big quantity process, works automatically |
| SX-2000 | 72 | 4 | 2 | 9.2 | Project construction, big quantity process, works automatically |
| SX-4000 | 144 | 8 | 2 | 18.4 | Big project construction, long time spraying project, big quantity of spraying work |
Company Strength
- 10+ years experience in tube mill equipment
- Complete production line (machining, assembly, testing)
- Strict quality inspection system
- Professional R&D team for customization
- Large inventory & fast delivery
Our Service
Pre-sale
Technical consultation & model selection
In-sale
Production tracking & quality control
After-sale
Installation guidance & spare parts support
Frequently Asked Questions
Q1: What is a zinc spray gun used for in tube mill production?
A: It is mainly used to repair damaged coating areas, protect weld seams, and provide anti-rust treatment for steel pipes. During high-frequency welding, the original galvanized layer at the seam is burned off, and a zinc spray gun helps rebuild this protective layer immediately.
Q2: How does zinc spraying compare to hot-dip galvanizing?
A: Unlike hot-dip galvanizing, zinc spraying does not require a full production line or immersion in molten zinc. It is a faster, more flexible, and easily controlled method that is highly suitable for localized post-weld repair and weld seam protection.
Q3: How does the zinc coating protect the steel pipe?
A: The sprayed zinc coating acts as both a physical barrier and a sacrificial layer. This means it continues to protect the underlying steel from rust even if the surface experiences minor damage.
Q4: What models of zinc spray machines do you offer?
A: We offer models ranging from the SX-400 (15KW, 1 gun) for partial repairs to the SX-4000 (144KW, 8 guns) designed for large-scale, automated project construction.
Q5: What are the payment terms and warranty details?
A: The Minimum Order Quantity (MOQ) is 1 set. Payment terms require a 50% deposit via T/T and the remaining 50% before delivery. All equipment comes with a 12-month warranty, and OEM customization is available.
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